Getting yourself on the mailing list is painless and there are a couple of ways to go about it. The most enjoyable is to come out and see Holdcell live and put pen to paper at the Merch Booth.
Neck and neck with that one is to send an email to cellmates at holdcell dot net OR join the CellMate Central Forum, hit the contact button, render the contact info you're comfortable sharing, and then come out and see Holdcell live.
Comments and questions welcome.
It's win/win whichever way you go!